Reducing the short-circuit rate and increasing the effective discharge rate are important targets for improving the servo control effect of micro-electrical discharge machining (micro-EDM), as these two indicators are closely related to the machining efficiency and quality. In this study, a feed-pulse collaborative control (FPCC) method is proposed for micro-EDM based on two dimensions (space and time). In the spatial dimension, a feed control strategy with a discharge holding process is adopted. Meanwhile, in the time dimension, a forward-looking pulse control strategy is adopted, in which the pulse interval is adjusted based on a sequence analysis of feed commands and discharge states. Process experiments are carried out to determine the key parameters used in this method, including the discharge holding threshold and pulse interval adjustment value (\(T_{{\text{off}_{{\text{adj}}} }}\)). The feed smoothness and discharge sufficiency analyses of the experimental results show that compared to the traditional double threshold average voltage method, the FPCC method reduces the number of long-distance retreats by 64% and improves the effective discharge time by 40%.

降低短路率和提高有效放电率是提高微放电加工（micro-EDM）伺服控制效果的重要目标，这两个指标与加工效率和质量密切相关。在本研究中，提出了一种基于二维（空间和时间）的微细电火花加工进给脉冲协同控制（FPCC）方法。在空间维度上，采用带有放电保持过程的进给控制策略。同时，在时间维度上，采用前瞻脉冲控制策略，根据进给指令和放电状态的序列分析来调整脉冲间隔。通过工艺实验确定了该方法使用的关键参数，包括放电保持阈值和脉冲间隔调整值（\ (T_{{\text{off}_{{\text{adj}}} }}\)）。实验结果的进料平稳性和放电充分性分析表明，与传统双阈值平均电压法相比，FPCC方法减少了64%的长距离撤退次数，提高了有效放电时间40%。